My wholly unsubstantiated hypothesis is that the body may use it as a "holding tank" for the mold toxins rather than letting them go through the intestines where (at least according to Ritchie Shoemaker's speculation) they will be reabsorbed into the body by the 24% of the population who have mold-susceptible or multisusceptible genes.
I didn't have any success with gall bladder treatments until I really got away from the mold. Then it started releasing all kinds of black mucus (which often came out in diarrhea) like crazy.
This is not only a hypothesis, here is a study (sorry, it´s in German) about the connection candida and gall bladder:
Gall bladder as reservoir for candida:
However, it should be borne in mind that the fungal colonization of the mouths is a risk to
for settlement in the gallbladder. As a result, the fungi can then, once in the
gallbladder, act as a permanent reservoir and risk for systemic, intestinal and
extraintestinal infections such as vaginal mycoses. In practice,
Experience has shown that this is the reason for often failured antifungal intestine treatments.